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Posted: 9/4/2007 6:22:01 PM EDT
| I took out some of my South African .308 battlepack, and loaded up my NM M1A. About every third or so shot, the primer would not ignite. In no particular order. I'd put it back in the magazine and try again, ans sometimes it goes off, sometimes it doesn't. The primer strikes DO look different, but one old M1A guy looked at the primer (that didn't go off) and said it looked deep enough to set the primer off. He said they may just be: "very hard primers." It will be a while until I go back out with a different ammo. Any suggestions? The rifle was moderately lubed, NOT dripping by any interpretation, but the bolt seemed to fly forward with sufficient power. HELP!!! |
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Ammo problem.. Short chamber with iffy quality foreign BALL. If the bolt doesn't fully go into battery it wont fire. Usually the hammer fall is enough to cam the bolt closed but not hit the firing pin enough. Next time you shoot it with that ammo visually check bolt before pulling trigger, you may have to bump the op-rod to fully chamber the longer ones.. |
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Definately not an ammo cook-off. You need very high chamber temps for that to happen. Without any knowledge of your rifle, I'd have to lay blame on the ammo. You really need to try some quality factory ammo to be sure. To chime in along tangeant's line of thinking... If your match rifle has a headspace closer to the SAAMI MINIMUM values then you might experience problems chambering surplus ammo. Remember that the M1A has a free-floating firing pin. When a round is chambered some dimpling is normal on the primer. Compare the primer from a case that fired normally to one that did not fire. See if the firing pin indention looks the same. |
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If the primer strike looks as deep as one on a round that actually fired then it's probably an ammo problem. I can't see where you'd get a deep primer hit and say the gun didn't get the firing pin to work. lol love the $0.03 worth due to inflation! consider this stolen. Inflation sucks!!!! |
| I've run a couple thousand rounds of SA thru three M1As, one standard, one NM and one Devine. I've NEVER had a problem with it going off. Break down your bolt and the FP and all related and clean it. Make sure your hammer is not riding foward and make sure it's headspaced properly. It could be the ammo, but SA is not known for duds, not the most accurate but it goes bang very reliably. |
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